Electric motor.



No. e3|,7ss. Patented Aug. 29, 1899.

J. ANDERSON.

ELECTRIC MOTOR.

(Application filed Sept. 19, 1898.) (No Model.) 2 Sheets$heet I INVENTOH A TTORNE ya No. 63l,768.

J. ANDERSON.

ELECTRIC MOTOR.

(Application filed Sept. 19, 1898.) (No Model.)

Patented Aug. 29, I899.

2 Sheets-Shae! 2,

W/ T/VE SSE S //V VENTOR TTOHNEY2).

THE ncRms-PET'EHS co. PHQTO-LITHOW WASHINGTON. D. c.

UNITED STATES PATENT OFFICE.

JOHN ANDERSON, OF ST. LOUIS, MISSOURI, ASSIGNOR OF ONE-HALF TO PATRICK H. CLARKE, OF SAME PLACE.

ELECTRIC MOTOR.

SPECIFICATION forming part of Letters Patent No. 631,768, dated August 29, 1899.

Application filed September 19, 1898. Serial No. 691,378. (No model.)

To all whom it may concern.-

, Be it known that I, JOHN ANDERSON, a citizen of the United States, residing at St. Louis, in the State of Missouri, have invented certain new and useful Improvements in Electric Motors, of which the following is a full, clear, and exact description, reference being had to the accompanying drawings, forming a part thereof.

My invention relates to improvements in electric motors; and it consists in the novel combination and arrangement of parts, as will be hereinafter more particularly described, and pointed out in the claims.

In the drawings, Figure 1 is a top plan view of my complete invention. Fig. 2 is an end view of the same. Fig. 3 is a detail plan view of a section of one of the couplings which I employ in carrying out my invention; and Fig. 4: is a section taken on the line m m of Fig. 3, showing the entire coupling.

The object of my invention is to construct what may be termed a gearless electric motor to be used particularly for cars, but it will be evident from the description to follow that the same may be used for any and all designs of vehicles, whereby the general construction is greatly simplified, and the motor can be easily and readily detached from the running-gear of the truck when it is desired to repair the same, all of the wheels of the truck being made a driver, and, further, said wheels being located comparatively close to one another, the great amount of friction heretofore produced in turning curves in the track is reduced to a minimum, and many other advantages will be apparent.

Briefly stated, the invention consists of the employment of the ordinary track-wheels, an electric motor located between the axles of said wheels, the casing of which is preferably circular in cross-section and divided into two parts longitudinally about its medial portion, the upper portion or half being supported and held by a suitable brace supported at its opposite ends by short shafts which form a continuation of the armature shaft of the motor, couplings for removably securing the said short shafts to the opposite ends of the armature-shaft, disks or wheels fixed to the short shafts and cooperating with the tread I portions of the track-wheels, the field of said motor being secured directly to the inner surface of the casing, whereby when the lower half of the casing is removed one-half of the said field is consequently removed and the armature in a position also to be removed, and in other details in the construction now to be described.

Referring to the drawings, 1 represents a truck, the construction of which forms the subject-matter of another application, and 2 the track-wheels for the same, which are of the usual construction.

The electric motor 2 is incased by a circular casing 3, divided in two sections 4. and 5, the upper section 4 of which is provided with books 6 or other fastening devices, which cooperate with a supporting-frame 7, having bearings 8 located at its opposite ends,through which the short shafts 9 loosely pass for holding the said upper half of the casing and that portion of the field of the motor carried thereby in a proper position in respect to the armature 10 of said motor. The two halves of the motor-casing 3 are each provided with extensions 11, which embrace the armatureshaft 12 and when bolted together secure the said halves of the casing together, and consequently hold the remaining portion of the field of the motor in a proper position in respect to the armature.

The short shafts 9 are removably secured to the opposite ends of the armature-shaft 12 by couplings 13, the construction of which is best shown in Fig. 4, in which 14 represents the two halves of the couplings which are secured together by bolts 15, one of the ends of the said short shafts and both ends of the armature-shaft being reduced and screw-threaded, on which are screwed nuts 16, which are located in depressions formed for their reception in the meeting faces of the halves of the couplings. The ends of the shafts adjacent to the screw-threaded portions of the same are conical in shape where they pass through the halves of the coupling, whereby when the nuts 16 are screwed up tightly the parts are securely held together. 7

In order to propel the truck 1, a wheel or disk 17 is keyed or otherwise secured to each of the short shafts 9 at a suitable position on the same between the bearings 8 and the bearings 18 of the truck-frame, which latter receive the opposite ends of said short shafts, the said Wheels or disks having circular flat engaging surfaces which are in frictional contact with the tread of the adjacent trackwheels and are also provided with circular grooves which receive the flanges of said track-Wheels and also in frictional contact with the same, the said grooves, however, being somewhat wider than the flanges of the track -'wheels to allow for a slight lateral movement of the parts when the truck is in operation.

From the foregoing description it will be seen that the track-wheels of the truck are propelled solely by frictional contact and that no pinions or gear-wheels are employed which are generally used for this purpose.

I do not limit myself to the precise construction and arrangement of parts as herein shown and described, as the same may be somewhat modified Without departing from the nature of my invention.

In carrying out my invention the supporting-frame 7 is rigidly secured, to the truckframe in any suitable and mechanical manner such as is commonly employed in all motortrucks.

Having fully described my invention, what I claim, and desire to secure by Letters Patent, is

1. In combination with a car-truck, and track-wheels thereof, of an electric motor, an armature shaft for the same, short shafts forming a continuation of said armatureshaft, couplings for removably securing said shafts together, hearings in the truck-frame for receiving the free ends of the short shafts, a frame to which the electric motor is removably secured, and having bearings located at its opposite ends, and adapted to embrace the short shafts, and disks or wheels fixed to the said short shafts and adapted to cooperate with the track-wheels for rotating the latter by frictional contact, as and for the purpose described.

2.; In combination with a car-truck and track-wheels thereof, of an electric motor, an armature shaft for the same, short shafts forming a continuation of the said armatureshaft, couplings for removably securing said shafts together, hearings in the truck-frame for receiving the free ends of the short shafts, a sectional casing for the motor, to which the field of the latter is secured, a frame removably secured to the upper half of the said casing having bearin gs located at its opposite ends, and adapted to embrace the short shafts for holding the upper half of the casing, means for securing the lower half of thecasing to said upper half, and disks or wheels fixed to the said short shafts,and adapted to cooperate with the adjacent pairs of trackwheels for rotating the latter by frictional contact, as and for the purpose described.

In testimony whereof I affix my signature in presence of two witnesses.

JOHN ANDERSON. Witnesses:

-G. F. KELLER,

ALFRED A. MATHEY. 

